Collapsible strainer



FIG. 1 is a top view of the collapsible strainer;

FIG. 2 is a front view of the collapsible strainer, the back side being a mirror-image;

FIG. 3 is a left side view of the collapsible strainer;

FIG. 4 is a right side view of the collapsible strainer;

FIG. 5 is a bottom view of the collapsible strainer; and,

FIG. 6 is a perspective view of the collapsible strainer. 

I claim the ornamental design for the collapsible strainer, as shown and described. 